There are about seven ____ students in Grade Eight in Chezhan Middle School.

How much did the new computer ______ you？

I called Mary many times yesterday evening. But I couldn’t get through. Her brother _____ on the phone all the time.

Do you __________ an American friend?—No, I don’t. But my sister __________ one.

Though I passed the exam,my teacher said that I could do better_____ English.[ ]